CVE-2018-0158
Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run IOS Software and Cisco IOS XE Software, fix it now.
CISA required action: Apply updates per vendor instructions.
US federal civilian agencies must remediate by Mar 17, 2022.
Patch status
No official fix confirmed yet
Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.
Description
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device to be processed. A successful exploit could cause an affected device to continuously consume memory and eventually reload, resulting in a DoS condition. Cisco Bug IDs: CSCvf22394.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
Affected products
| Product | Vendor | Affected versions | Source |
|---|---|---|---|
| Cisco networking & security | Cisco | 15.5\(3\)s1.1; 15.5\(3\)s1.2; 15.5\(3\)s1.4; 15.5\(3\)s1.5; 15.5\(3\)s1.7; 15.5\(3\)s1.8 | NVD |
| IOS | Cisco | 15.5\(3\)s1.1; 15.5\(3\)s1.2; 15.5\(3\)s1.4; 15.5\(3\)s1.5; 15.5\(3\)s1.7; 15.5\(3\)s1.8 | NVD |
| IOS Software and Cisco IOS XE Software | Cisco | — | KEV |
Sources: NVD = NIST National Vulnerability Database; KEV = CISA Known Exploited Vulnerabilities catalog.
Intelligence timeline
Developments from the last 30 days, newest first.
- CVSS scoredUpdateKEV
CVE-2018-0158 scored CVSS 8.6: Cisco IOS Software and Cisco IOS XE Software, Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability
CISA lists this as exploited in the wild. Unpatched IOS Software and Cisco IOS XE Software systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
1 earlier event is available with a subscription. See plans.
Coverage
We have not published a story about this vulnerability yet.